Quote Originally Posted by akoltek View Post
In my case, I am trying to conduct market research into the value of a particular large format camera before I purchase it. This camera (a Wehman) is relatively uncommon and ebay and other markets do not have any data.
They haven't been offered here very often either. Its a thin market, so prices should be very dispersed. Also, since there are sometimes long-term trends with, alas, a lot of scatter old sales aren't particularly informative about current prices.

If you want one and can afford the one you've found, you're probably better off buying it than waiting for a less expensive one to turn up. Understand, under sod's law if you buy it one will turn up the next day at half the price and if you don't buy and someone else snags it another will come to market the next day at twice the price. In short, whatever you do will be wrong.